Bevel-square.



F. 0. HAGA.

BEV-El. SQUARE.

APPLICATION FILED JUNE 22, 1914.

PatentedApr. 6, 1915.

AHI

{ min.

FRANCIS O. HAGA, OF ZANESVILLE, OHIO.

BEVEL-SQUARE.

Specification of Letters Patent.

Application filed June 22, 1914. Serial No. 846,658. 1

To all whom it may concern:

' Be it known that I, FRANCIS O. HAGA, a citizen of the United States, residing at Zanesville, in the county of Muskingum and State of Ohio, have invented certain new and useful Improvements in Bevel-Squares, of which the following is a specification.

This invention relates to a bevel square and has for its principal object the production of a pivotally secured blade which is adapted to be easily swung and held in a set position for finding a determined bevel as desired. I 7

Another object of this invention is the production of a bevel square having integral lugs extending from the stock thereof whereby graduated plates may be detachably supported and heldin a correct position upon the stock so as to facilitate the finding of a desired level.

With theseand other objects in view, this invention consists of certain novel combinations, constructions, and arrangements of parts as will be hereinafter fully described and claimed.

In the accompanying drawing :Figure 1 is a side elevation of the bevel square showing the blade in an extended set position. Fig. 2 is a side elevation of the device partly broken away, showing the blade in a closed position. Fig. 3 is a section taken on the line 33 of Fig. 1. Fig. 4 is a section taken on the line 41 of Fig. 2. Fig. 5 is a detailed perspective view of one of the winged nuts. Fig. 6 is a plan View of a plurality of plates which may be used in connection with this device. Fig. 7 is a fragmentary reduced perspective view of a portion of a stock showing the integral lugs carried thereby.

Referring to the accompanying drawing by numerals 1 designatesthe stock of the beveled square which is bifurcated to provide the side walls 2. This will allow a space 3 to be formed between the side walls 2 in which the blade 4 is adapted to be positioned as desired. The blade 4 is .provided with a slot 5 through which the bolt 6 is adapted to pass. This bolt 6 also passes through the outer ends of the walls 2 for pivotally securing the blade 4: between the walls. It will be seen that the walls 2 are provided with the reinforcing ribs 7 adjacent their side edges for reinforcing the same but it will be noticed that these ribs 7 terminate at a spaced distance from the outer ends of the walls 2 so as to provide an even outer bearing surface upon the walls. By referring to Fig. 7 it will be seen that one of the walls 2 is provided with short integral lugs 8 extendingoutwardly from the face of the wall and positioned upon "each side of the opening 9 formed in the Patented Apr. 6, 1915.

The plates are also provided with apertures 16 for the reception of the lugs 8 whereby the plates will be held in a set position upon the stocks therebv preventing the movement of the bolt or the blade from moving the plate carried upon the wall for the lugs 8 from its correct position. The threaded wing nuts 17 each of which have a wing 18 are threaded into engagement withQthe bolt 6 for firmly clamping the side walls adapted to extend in the same direction as the gage-line QOformed upon the blade 4.

As shown in Fig. 1 this gage-lineQO is in alinement with the line bearing the numeral S for representing the square, also the other letters 0 representing an octagon, H representing a hexa gon, M representing a miter and T representing a triangle. Any other letters desired may be placed upon the side wall or upon the plate without departing from the spirit of the invention for allowing the diflerent bevels for rafters or for other carpentry work to be easily determined.

It will of course be noted that when desired one of the wing nuts 17 may be removed at which time the plate held in position. by lugs may be removed and a new one substituted.

From the foregoing description it will be seen that a simple and efiicient bevel square has been produced which is so formed as to allow the blade to be easily swung and held in position for facilitating the finding of a desired angle or bevel and which is formed so as to provide lugs which are adapted to hold detachable graduated plates in their correct set position.

said bolt passing through said opening formed in said plate, each plate also being provided with alined apertures, said lugs fitting within said apertures, whereby said plate will be held against rotation upon said last-mentioned side wall, said lugs also holding said plate in its correct position, whereby the graduations of said plate will remain in position for allowing the easy adjustment of said blade relative to said stock, and means of engaging said bolt for holding said walls, said plate and said blade in an adjusted clamped engagement with each other.

In testimony whereof I aliiX my signature in presence of two witnesses.

FRANCIS O. HAGA.

Witnesses ALBERT NIDER, GRACE A. JEFFRIES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D6. 

